KR101193404B1 - Chair with waist supporter - Google Patents

Abstract

PURPOSE: A chair including a variable waist supporter is provided to enable a user to conveniently set the location of a waist supporter according to a desired seating location by controlling a control knob. CONSTITUTION: A pad(12) supports the waist of a person who is seated. A link member(13) moves the pad from a mounting member(11) to a front and upward direction. An elastic member(14) elastically supports the link member. A control knob(15) is installed in one side of a left plate. One end of a wire(16) is convolved at one end of a wire(16) according to the rotation of the control knob. An inter angle between the mounting member and the link member is determined according to a winding level of the wire.

Description

Chair with adjustable waist support {chair with waist supporter}

The present invention relates to a chair provided with a waist support, which is basically always in close contact with the seat of the seater regardless of the seating state of the user, so that the back can be correctly supported. In particular, the seated user can quickly and easily position the waist support. A chair with a variable lumbar support that can be adjusted and used.

In general, the chair separates each other from the seat supporting the buttocks and the backrest supporting the back portion, thereby providing convenience and comfort by allowing the backrest to be tilted or elastically bent at an angle when the external force is applied.

If you sit in such a chair for a long time, due to an incorrect posture, such as bending the back, the burden on the lower back causes pain or fatigue. This is because the backrest is concentrated in one part of the lumbar spine rather than evenly distributed throughout the seated spine.

Accordingly, a chair having a lower back for supporting a lower back (lumbar) has been proposed in various forms.

As an example, FIG. 1 is a diagram disclosed in Korean Utility Model Registration No. 0336085.

The chair shown in FIG. 1 is provided with an auxiliary backrest 5 which is spaced apart by a predetermined distance from the front of the backrest 2 via an elastic member 3, and one end is caught by a central portion of the auxiliary backrest 5. It includes an adjustment bolt (4) provided to be able to adjust the elasticity of the auxiliary back (5) to correspond to tightening and loosening.

However, the conventional chair having a waist rest has the following problems.

First, in order to adjust the position of the lumbar support, the position of the auxiliary backrest can be adjusted by operating the adjusting bolt installed at the back of the backrest, so that the position of the auxiliary backrest cannot be adjusted while seated on the chair. Do.

In addition, since the adjustment bolt cannot be operated in a seated state, it is inevitably moved to the back of the backrest to operate the adjustment bolt, and if it is not in the chair again, the auxiliary backrest is not exactly positioned to the desired position. Only after carrying out the position shift could the setting of the auxiliary back to the comfortable position be completed.

In addition, since the auxiliary backrest is fixedly supported forwardly by the elastic member from the backrest, the height direction of the auxiliary backrest cannot be adjusted according to the user, for example, seated for each user as if the sitting height is large or small. When the position of the lumbar support in one state is changed, there is a problem in that it does not provide an optimal lumbar support function.

Domestic Utility Model Publication No. 0336085 (0000.00.00) Domestic Patent Publication No. 2009-0103517 (2009.10.01)

Therefore, the problem to be solved by the present invention is to provide a chair having a variable waist support that can be used to easily adjust the position of the waist support according to their preferred position while the user is seated on the chair.

In particular, it is possible to optimally implement the position adjustment of the backrest according to the angle of the backrest from the seat to provide a chair having a variable backrest that can support the user's waist most comfortably.

Another problem to be solved by the present invention is to support the waist comfortably by using the cushioning function by the elastic member, while maintaining the correct posture stably in the seated state irrespective of the elastic member to correctly support the seated person's posture. It is to provide a chair having a multifunctional waist support that can be.

The present invention for achieving the above object is a seat plate, a backrest, and a chair provided with a waist support on the backrest,

A mounting member fixed to the back frame;

A pad disposed in front of the mounting member to support a waist of the seated person;

A link member having one end connected to the mounting member and the first hinge and the other end connected to the pad and the second hinge so that the pad is movable upward and upward from the mounting member;

An elastic member connecting between the mounting member and the link member and elastically supporting the link member to be rotated forward and upward from the mounting member about a first hinge;

An operation knob installed at one side of the seat plate to receive a user's operation force; And

It is installed to connect the intermediate portion of the link member and the operation knob, consisting of a wire for determining the angle between the mounting member and the link member according to the extent that one end is wound around the operation knob by the forward and reverse rotation of the operation knob It is characterized by.

Here, the pad, the other end rotated about the first hinge by the operating force of the operating knob is disposed below the horizontal line perpendicular to the back frame to form an acute angle with the back frame, to support the user's waist by the elastic force of the elastic member A first elastic support section; The other end rotated about the first hinge by the operating force of the operation knob is disposed above the horizontal line perpendicular to the back frame to form an obtuse angle with the back frame, and to support the user's waist regardless of the elastic force of the elastic member. It may have a section.

On the other hand, the backrest is installed so as to surround the backrest frame includes a backrest seat that is in close contact with the user's waist and back; The pad may be configured to be installed inside the back seat.

According to the present invention, a user seated on a chair provided with a waist support can easily set the position of the waist support according to his / her preferred seating position by manipulating an operation knob installed on one side of the seat.

In addition, the present invention can set the comfortable seating position according to the user's preference, when setting the waist support section that the cushion function using the elastic member of the waist support, the waist is excluded from the cushioning function of the elastic member of the waist support When setting the support section, unlike the user's appetite it is possible to maintain the correct sitting posture at all times to improve the user's back health.

In addition, the present invention because the position of the waist support satisfies the lifting structure with the forward movement from the backrest only by the operation of the operation knob, there is an advantage that can be set a variety of positions of the waist support according to the user's physical condition.

1 is a cross-sectional view showing the configuration of the waist support of the conventional chair
Figure 2 is a front and side view showing the configuration of the waist pedestal chair according to the present invention
Figure 3 is a side view showing the configuration of the waist support according to the present invention
Figure 4 is a side view showing a non-operational state of the waist support according to the present invention
Figure 5 is a side view showing a first elastic support section of the waist cradle according to the present invention
Figure 6 is a side view showing a second fixed support section of the lumbar support according to the present invention
Figure 7 is a partial cross-sectional view showing the configuration of the operation knob according to the present invention

The features and advantages of the present invention described above or not described above will be more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings.

Referring to Figure 2, the chair according to the present invention is installed on the seat plate (1) on which the user sits, the backrest (2) in close contact with the back, and a part of the backrest (2) to support a part of the user's back It is configured to include a lumbar support 10 to induce a correct seating state.

3 to 7, the waist pedestal 10, which is a main feature of the present invention, includes a mounting member 11, a pad 12, a link member 13, an elastic member 14, an operation knob 15, And a wire 16.

The mounting member 11 is a member for supporting the waist support 10, and is installed by fixing means such as bolts on the backrest frame 201 constituting the skeleton of the backrest 2. The fixing means may be integrally fixed to the back frame 201 by welding or the like instead of bolts.

The pad 12 is a member that is in close contact with a user's back and guides the user's back posture supported by the user's back 2, and is in front of the mounting member 11, precisely the back frame 201. Placed in front of it. The pad 12 is preferably formed by concave curved in the middle portion so as to be closely supported in response to the back bending of the seated person.

Here, the backrest 2 may be configured to include a backrest seat 22 which is directly in close contact with the user's back, wherein the pad 12 is installed inside the backrest seat 22, according to the protruding position The back seat 22 can be formed convex or concave together.

The link member 13 is a support member that connects the mounting member 11 and the pad 12. The protruding position of the pad 12 from the backrest frame 201 is set according to the set position of the link member 13. It is decided.

One end of the link member 13 is connected to the mounting member 11 and the first hinge 131, and the other end thereof is connected to the pad 12 and the second hinge 132.

That is, the link member 13 is connected to the mounting member 11 and the first hinge 131 to form a structure in which the other end can be rotated forward and upward from the mounting member 11 about the first hinge 131. The pad 12 moves in conjunction with the other end of the link member 11 and the second hinge 132 to form a rotatable structure around the second hinge 132 so that the user moves the waist toward the front of the chair. Regardless of bending or flipping backwards, it is possible to maintain a stable close contact with the user's waist at all times.

Unlike the illustrated figure, the link member 13 may be formed in two or more numbers in the width direction of the back frame 201 to secure rigidity.

The link member 13 is connected to the mounting member 11 via the elastic member 14.

The elastic member 14 may be configured in the form of a torsion spring, that is, to form a structure surrounding the first hinge 131, one end is supported by the mounting member 11 and the other end is supported by the link member 13 Thus, the other end of the link member 13 is rotated forward and upward about the first hinge 131 to be spaced apart.

As a result, the link member 13 completely overcomes the elastic restoring force of the elastic member 14 to be fully rotated backward and downward toward the mounting member 11 so that the pad 12 is completely inserted into the backrest frame 201. It maintains a state in which the function of the waist support is excluded. On the contrary, the pad 12 is rotated forward from the mounting member 11 by the elastic restoring force of the elastic member 14 so that the link member 13 is aligned with the horizontal line c parallel to the back frame 201. Maintains the maximum protruding forward from the backrest frame 201. On the other hand, in the state that the maximum rotation from the mounting member 11 forward upward by the elastic restoring force of the elastic member 14, the pad 12 maintains the state protruded from the backrest frame 201 at the maximum height upward do.

As a result, the pad 12 can be positioned by interlocking the height position from the seat plate 1 as well as the positioning protruding forward from the backrest 2 by the forward and reverse rotation operation of the manipulation knob 15.

4 to 6, the waist pedestal 10 according to the present invention has a first elastic support section A and a second fixed support section B according to the protruding position of the pad 12.

That is, in the section where the link member 13 forms an acute angle from the back frame 201 because the second hinge 132 to which the pad 12 is connected is downwardly lowered from the horizontal line c perpendicular to the back frame 201. The first elastic support section A, in which the elastic force of the elastic member 14 is applied, is formed on the pad 12 that is in close contact with the waist of the user. In other words, the first elastic support section (A) in the angle section that does not exceed the horizontal line (c) perpendicular to the backrest frame (201) in the state that the link member 13 is narrowed to the maximum by overcoming the elastic force of the elastic member (14) Will work.

In a section in which the second hinge 132 to which the pad 12 is connected is upwardly raised above the horizontal line c perpendicular to the back frame 201 so that the link member 13 forms an obtuse angle from the back frame 201. The second fixed support section B is formed in the pad 12 in close contact with the waist of the elastic force by the elastic member 14 is excluded. In other words, the second fixed support section B is operated in an angular section in which the link member 13 is rotated forward and upward to the maximum beyond the horizontal line c perpendicular to the backrest frame 201.

As a result, the user can not only determine the front and upper and lower projecting positions of the pad 12 according to the operation of the manipulation knob 15 to be described later, but also the first elastic support section in which the elastic force of the elastic member 14 acts. (A) and the second fixed support section (B) that does not act the elastic force of the elastic member 14 can be used together.

In the first elastic support section A, in which the elastic force acts as in the former, the comfort state of the user who is more seated in maintaining a correct posture can be satisfied, and the second fixed support section B in which the elastic force acts like the latter Rather than provide temporary comfort to seated users, it is possible to forcibly maintain the correct posture for a long time to promote the user's health.

Subsequently, the operation knob 15 is a member that provides a user's operation force to arbitrarily set the protruding position of the lumbar support 10 according to the present invention, and allows the seat of the seated user to be naturally positioned. It is installed on one side of the frame 101.

The wire 16 is a member for connecting the link member 13 and the operation knob 15 so that the operating force of the operation knob 15 is provided to the link member 13, and has a predetermined length, and one end of the wire 16 has a predetermined length. It is connected to the middle of the link member 13 and the other end is connected to the operation knob 15. As a result, the wire 16 is interlocked with the forward and reverse rotation of the operation knob 15 so that one end of the wire 16 is wound or unwound by the drum 150 of the operation knob 15. Will be determined.

Here, since the link member 13 to which the wire member 16 is connected is maintained in a state of being rotated forward and upward by the elastic member 14, the fixing means for maintaining the rotated position in the operation knob 15. You will need

That is, according to the embodiment shown in FIG. 7, a spring 151 is interposed on one end of the operating knob rotating shaft coupled to the seat plate frame 101, and a locking gear 152 is formed on the rotating shaft of the operating knob. . The latch 153 is provided on the seat frame 101 so as to be adjacent to the locking gear 152 in the axial direction so as to correspond to the locking gear 152.

Eventually, when the user's operating force is not applied to the operation knob 15, the operation knob 15 is moved to the outside (left direction in the figure) by the elastic restoring force of the spring 151, as shown in (a) the drawing gear portion 152 is held by the latch 153, the rotation is stopped to maintain the state, thereby restoring the elastic restoring force of the elastic member 14 with respect to the wire 16 connected to the link member 13 By generating a tension to overcome, the position of the pad 12 is kept stable. Of course, at this time, even if a load is applied from the user to the pad 12, the flexible structure of the wire 16 allows the elastic member 14 to flexibly support the user's waist through the contraction and expansion functions. do.

On the contrary, when the user wants to adjust the position of the waist pedestal 10 by manipulating the manipulation knob 15, (b) as shown in the figure, the elastic restoration force of the spring 151 is first overcome to move the manipulation knob 15 in the axial direction. By moving, the locking gear 152 is spaced apart from the latch 153 to maintain a rotatable state. In this state, when the operation knob 15 is rotated in the reverse direction, one end of the wire 16 is wound or unwound by the drum 150 to generate tension, and in conjunction with the link member 13 in which the wire 16 is connected in the middle. Rotates around the first hinge 131 and the angle is adjusted to determine the position of the pad 12.

Thereafter, if the pad 12 is held at a desired position, the user removes the manipulation force applied to the manipulation knob 15, whereby the position is fixed as shown in the drawing (a), thereby fixing the pad 12.

Referring to the operation of the waist support as described above are as follows.

First, the lumbar support 10 according to the present invention can be completely inserted into the backrest frame 201 to maintain a state in which the function of the lumbar support is completely excluded.

That is, as shown in FIG. 3, the pad 12 is completely inserted into the backrest frame 201 while the operation knob 15 is rotated in the counterclockwise direction, thereby excluding the function of the waist support. Showing the state of the chair.

That is, one end of the wire 16 having a predetermined length is wound on the drum 150 of the operation knob 15, thereby rotating the link member 13 backward and downward about the first hinge 131. Together, the pads 12 remain fully inserted into the backrest frame 201.

On the other hand, in the case where the user seated on the chair intends to impart the function of the waist pedestal as necessary, it is operated by rotating the operation knob 15 counterclockwise.

That is, when the operation knob 15 is rotated in the clockwise direction, the link member 13 connected to the wire 16 having a predetermined length rotates forward from the mounting member 11 about the first hinge 131. do. As a result, the pad 12 connected to the other end of the link member 13 and the second hinge 132 is interlocked to protrude upward of the backrest 2.

Here, since the link member 13 is elastically supported in the rotational direction from the mounting member 11 via the elastic member 14, the operation of the link member 13 is very small even when the user gives the operation knob 15 a very small operating force. It is very easy to implement.

4 and 5, when the pad 12 is located in the first elastic support section A, the pad 12 protrudes from the backrest 2 to seat the user's waist line. It can support correctly, and with this, for example, when the user leans back strongly, the elastic member 14 receives it and performs a predetermined cushion function, thereby providing comfort to the seated user.

If the user continuously rotates the operation knob 15 in the clockwise direction, the link member 13 connected to the wire 16 having a predetermined length is moved upward from the mounting member 11 about the first hinge 131. Will rotate further. As a result, the pad 12 connected to the other end of the link member 13 and the second hinge 132 is further protruded upward of the backrest 2 in cooperation.

Here, when the pad 12 is located in the second fixed support section B, as shown in FIG. 6, the load of the user leaning on the backrest 2 causes the pad 12 to rise upward and rearward of the backrest 2. Even if it is to be rotated by the wire 16 of a certain length, further rotation is blocked by the tension, so that the second hinge 132 on which the load is applied stays at a position higher than the horizontal line (c) than the first hinge 131 Therefore, the elastic member 14 also corresponds to a section in which the elastic force does not work. As a result, the second fixed support section B performs a function of always correctly supporting the user's waist through the fixed pad 12.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

(1): seat plate 101: seat plate frame
(2): backrest 201: backrest frame
22: backrest seat 10: waist support
(11): mounting member 12: pad
(13): link member 131: first hinge
132: second hinge 14: elastic member
(15): Operation knob 16: Wire
(A): first elastic support section (B): second fixed support section

Claims (4)

A chair provided with a seat plate, a backrest, and a waist support on the backrest,
A mounting member 11 fixed to the back frame 201;
A pad 12 disposed in front of the mounting member 11 to support a seated person's waist;
One end is connected to the mounting member 11 and the first hinge 131 and the other end is connected to the pad 12 and the second hinge 132 so that the pad 12 can move upward and upward from the mounting member 11. Link member 13 connected to;
An elastic member 14 connecting between the mounting member 11 and the link member 13 and elastically supporting the link member 13 to be rotated forward and upward about the first hinge 131;
An operation knob 15 installed at one side of the seat plate to receive a user's operation force; And
It is provided to connect the intermediate portion of the link member 13 and the operation knob 15, the mounting member (depending on the degree of winding one end to the operation knob 15 by rotating the operation knob 15 in the reverse direction) 11) and a wire 16 for determining the angle between the link member 13, including,
The other end of the link member 13 rotated about the first hinge 131 by the operating force of the operation knob 15 is disposed downward from the horizontal line c perpendicular to the back frame 201 so that the back frame 201 A first elastic support section A formed at an acute angle to support the waist of the user by the elastic force of the elastic member 14;
The other end of the link member 13 rotated about the first hinge 131 by the operating force of the operation knob 15 is disposed upward from the horizontal line c perpendicular to the back frame 201 so that the back frame 201 A second fixing support section B which forms an obtuse angle and supports the waist of the user regardless of the elastic force of the elastic member 14; Chair equipped with a waist support, characterized in that configured to have. delete The method according to claim 1,
The backrest 2 includes a backrest seat 22 that is installed to surround the backrest frame 201 and the back and the back of the user are in close contact with each other;
The pad 12 is a chair having a waist rest, characterized in that the installation is configured inside the back seat (22). The method according to claim 1,
The operation knob 15, the chair provided with a waist support characterized in that it comprises a fixing means for maintaining a forward and reverse rotation position.

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